Sammystorm

Why I like the clasp and a heavy hitter is because they allow you to compete if your turn 2 or 3 kill fails. They are great late game.

This is looking good! The side board is a great counter to Milera!
The one thing I would do is drop mortorpod all together because it doesn't do infect. Instead Put in more kill spells or pumps. The other thing is May be take out skithiryx for something else that hits hard.

If you can afford it I would say Skithiryx. If you can't the hydra is a good substitute.

No problem! Keep up the tweaking and way to make it your own!

If you want to see the deck I based around Melira here is the link http://www.mtgvault.com/ViewDeck.aspx?DeckID=180890

I would agree with the above post. Since you are running red I really think you should run Lightning bolt. Also I think I would remove the Cathedral membrane and put in 2 to 4 Golden globe Moth

Honestly I think these kinds of builds are too slow but with some good defense it is possible to make yourself very hard to beat. Type 2 right now can be really quick especially kuldotha red. I would say you can hold your own but won't be winning many tournaments.

-4 Myr Superion
+3 Whisper Silk Cloak
-2 Blightsteel Colossus
+3 Darksteel Plate
-2 Platinum Angel
+2 Puresteel Paladin

And I would main board Birds of Paradise over Wall of Omens

Toss in ascetism it will give the golems shroud.

I made a type-o -3 Spread the sickness +3 Mutagenic Growth

You had too many creatures and not enough control but if you go for some of the suggestions I put in it should serve to make the deck faster and better! Green has really good pumps and black has really good creature control! Nice work and keep working at decks!

-2 Trigon of corruption
+3 Contagion clasp
-1 Viridian Emisary
-1 Tel Jilad Fallen
-2 Flensermite
+4 Glistner Elf
-2 Fume Spitter
+2 Phyrexian Crusader
-1 Tangle Angler
+1 Phyrexian Hydra
-1 Flesh Eater Imp
-2 Septic Rats
-1 Blight Mamba
+4 Giant Growth
-3 Scourge Servents
+3 Rot Wolf
-2 Skinrender
+2 Skithiryx, the Blight Dragon
-1 Glissa the traitor
-1 Phyresis
-1 Savage Silhouette
+3 Tumble Magnet
-2 Forest
-2 Swamp
+4 Inkmoth Nexus
-2 Pistus strike
+2 Doom Blade
-1 Tainted Strike
-1 Morbid Plunder
+2 Go For The Throat
-1 Spread the Sickness
-1 Black Sun's Zenith
-2 Spread the Sickness
+4 Mutagenic Growth

SideBoard:
+3 Black Sun's Zenith
+4 Groundswell
+4 Vines of Vastwood
+4 Nature's Claim

I almost forgot
-2 Dark Ritual
+2 Vines of Vastwood

-2 Swamp
-2 Forest
+4 Inkmoth nexus
-2 Go for the Throat
+2 Doom Blade
-4 Untamed might
+4 Mutagenic Growth
-2 Dark Ritual
+2 Groundswell
-4 Blight Mamba
+4 Glistner Elf
-4 Hand of the Praetors
+4 Contagion clasp
-2 Royal Assassin (Not infect)
+2 Nature's claim

I would recommend these changes because it will lower the mana curb and it will speed up your infect wins. Nice build though!

So the major weakness i see in this deck is the inability to stop anything coming your way. So Here is the changes I would recommend: -2 mortor pods (slow and don't actually do infect)
-2 Cystbearers (too slow)
-4 Blight Mambas (going for infect not regeneration)
-4 Plague Stingers (Not that great because Inkmoth is better)
-2 Phyrexian Crusader (Need more proliferation and less creatures)
+4 Contagion Clasp (Proliferation is an infect decks best friend)
+3 Giant Growth (Sudden pumps are dangerous in infect decks)
+4 Mutagenic Growth (Phrexian mana pump)
+3 tumble Magnet (Great for board control and can be proliferated)

Nice idea though!

You should run the land Inkmoth Nexus it is a great infect card.

Have you thought about adding Nissa Revane?

Have you thought about Goblin Wardrivers?

I also am not a big fan of enslave and I would put in some more go for the throat or lands.

I would put in Go for the throat. Maybe take out a praetor's Grasp and the Duress.